lvgl/scripts/built_in_font/built_in_font_gen.py

import argparse
from argparse import RawTextHelpFormatter
import os
import sys

parser = argparse.ArgumentParser(description="""Create fonts for LittelvGL including the built-in symbols. lv_font_conv needs to be installed. See https://github.com/littlevgl/lv_font_conv
Example: python built_in_font_gen.py --size 16 -o lv_font_roboto_16.c --bpp 4 -r 0x20-0x7F""", formatter_class=RawTextHelpFormatter)
parser.add_argument('-s', '--size', 
					type=int, 
					metavar = 'px', 
					nargs='?', 
					help='Size of the font in px')
parser.add_argument('--bpp', 
					type=int, 
					metavar = '1,2,4', 
					nargs='?', 
					help='Bit per pixel')
parser.add_argument('-r', '--range', 
					nargs='+', 
					metavar = 'start-end', 
					default='0x20-0x7F', 
					help='Ranges and/or characters to include. Default is 0x20-7F (ASCII). E.g. -r 0x20-0x7F, 0x200, 324')
parser.add_argument('--font', 
					metavar = 'file', 
					nargs='?', 
					default='Roboto-Regular.woff', 
					help='A TTF or WOFF file')
parser.add_argument('-o', '--output', 
					nargs='?', 
					metavar='file', 
					help='Output file name. E.g. my_font_20.c')
parser.add_argument('--compressed', action='store_true',
                    help='Compress the bitmaps')
                    
args = parser.parse_args()

if args.compressed == False:
	compr = "--no-compress --no-prefilter"
else:
	compr = ""

#Built in symbols
syms = "61441,61448,61451,61452,61453,61457,61459,61460,61461,61465,61468,61473,61478,61479,61480,61502,61504,61512,61515,61516,61517,61521,61522,61523,61524,61543,61544,61553,61556,61559,61560,61561,61563,61587,61589,61636,61637,61639,61671,61683,61724,61732,61787,61931,62016,62017,62018,62019,62020,62099"

#Run the command
cmd = "lv_font_conv {} --bpp {} --size {} --font ./Roboto-Regular.woff -r {} --font FontAwesome.ttf -r {} --format lvgl -o {} --force-fast-kern-format".format(compr, args.bpp, args.size, args.range[0], syms, args.output)
os.system(cmd)